APA (7th ed.) Citation

Twyman, S. (2002). Papal ceremonial at Rome in the twelfth century. Boydell Press.

Chicago Style (17th ed.) Citation

Twyman, Susan. Papal Ceremonial at Rome in the Twelfth Century. London ; Rochester, NY: Boydell Press, 2002.

MLA (9th ed.) Citation

Twyman, Susan. Papal Ceremonial at Rome in the Twelfth Century. Boydell Press, 2002.